At the beginning of June, the UK average price of a litre of diesel was 183.75p. However, by the end of the month, it had tumbled by 16.6p to 167.14p. That's the biggest monthly slide since records began.

The cost of oil, which is a major influence on fuel prices, fell below pre-crisis levels for the first time since the war started on February 28

At the beginning of June, the UK average price of a litre of diesel was 183.75p. However, by the end of the month, it had tumbled by 16.6p to 167.14p. That's the biggest monthly…